Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ad2d582c712f027…

MALICIOUS

PDF

22.7 KB Created: 2019-04-30 11:20:21 +01:00 Authoring application: mPDF 5.7
MD5: 3969942c14eff13f6e98416e377e7923 SHA-1: a88840637f86224e092b728462b38229b93d5f22 SHA-256: 5ad2d582c712f027cdd09cf1610fc99679b84ebf24d26b4d9b0736a4662ab1b3
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. These links all point to a dynamic DNS domain, suggesting an attempt to create a link farm or engage in SEO poisoning. While no scripts were explicitly extracted, the ML_NYX_PDF_MALICIOUS heuristic and the nature of the link farm suggest malicious intent, likely to drive traffic or potentially host malicious content indirectly. The embedded URLs are the primary IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://loaminoo.linkpc.net/2095090091095/Wonderworks-Science-Fiction-and-Fantasy-Art-by-Michael-Whelan.pdf
    • http://loaminoo.linkpc.net/2096090090095/Fantasy-amp-Science-Fiction-May-June-2014-The-Magazine-of-Fantasy-amp-Science-Fiction-713-by-Gordon-Van-Gelder.pdf
    • http://loaminoo.linkpc.net/2097093093093/The-Magazine-of-Fantasy-and-Science-Fiction-June-1976-The-Magazine-of-Fantasy-amp-Science-Fiction-301-by-Edward-L-Ferman.pdf
    • http://loaminoo.linkpc.net/7097096097097095/The-Magazine-of-Fantasy-and-Science-Fiction-September-2008-The-Magazine-of-Fantasy-amp-Science-Fiction-676-by-Gordon-Van-Gelder.pdf
    • http://loaminoo.linkpc.net/1091097095095092091/The-Magazine-of-Fantasy-and-Science-Fiction-March-1986-The-Magazine-of-Fantasy-amp-Science-Fiction-418-by-Edward-L-Ferman.pdf
    • http://loaminoo.linkpc.net/1090095094093091099/The-Magazine-of-Fantasy-amp-Science-Fiction-April-1989-The-Magazine-of-Fantasy-amp-Science-Fiction-455-by-Edward-L-Ferman.pdf
    • http://loaminoo.linkpc.net/1091098091099097090/The-Magazine-of-Fantasy-amp-Science-Fiction-July-1989-The-Magazine-of-Fantasy-amp-Science-Fiction-458-by-Edward-L-Ferman.pdf
    • http://loaminoo.linkpc.net/1091099090092095093/The-Magazine-of-Fantasy-amp-Science-Fiction-May-1985-The-Magazine-of-Fantasy-amp-Science-Fiction-408-by-Edward-L-Ferman.pdf
    • http://loaminoo.linkpc.net/1091091092095092095/Nebula-Awards-Showcase-2000-The-Year-s-Best-SF-and-Fantasy-Chosen-by-the-Science-Fiction-and-Fantasy-Writers-by-Gregory-Benford.pdf
    • http://loaminoo.linkpc.net/3090099090099093/Conclave-A-Collection-of-Science-Fiction-and-Fantasy-by-Lee-Murray.pdf
    • http://loaminoo.linkpc.net/5094099094090099/For-the-Time-Being-A-Science-Fiction-Fantasy-by-Marie-DesJardin.pdf
    • http://loaminoo.linkpc.net/9098091099097/Meanwhile-Elsewhere-Science-Fiction-and-Fantasy-from-Transgender-Writers-by-Cat-Fitzpatrick.pdf
    • http://loaminoo.linkpc.net/2094094097096/Eclipse-2-New-Science-Fiction-and-Fantasy-by-Jonathan-Strahan.pdf
    • http://loaminoo.linkpc.net/9092090099095/Eclipse-3-New-Science-Fiction-and-Fantasy-by-Jonathan-Strahan.pdf
    • http://loaminoo.linkpc.net/1095095090093093/Strange-Science-Fiction-and-Fantasy-Omnibus-by-Benson-Grayson.pdf
    • http://loaminoo.linkpc.net/2097093092093096/The-Best-Science-Fiction-and-Fantasy-of-the-Year-Volume-8-by-Jonathan-Strahan.pdf
    • http://loaminoo.linkpc.net/2096095092093095/Best-Vegan-Science-Fiction-amp-Fantasy-of-2016-by-B-Morris-Allen.pdf
    • http://loaminoo.linkpc.net/2096090095097/The-Best-Science-Fiction-and-Fantasy-of-the-Year-Volume-6-by-Jonathan-Strahan.pdf
    • http://loaminoo.linkpc.net/2096090091090/The-Best-Science-Fiction-and-Fantasy-of-the-Year-Volume-9-by-Jonathan-Strahan.pdf
    • http://loaminoo.linkpc.net/1096093090094099/The-Best-American-Science-Fiction-and-Fantasy-2018-by-John-Joseph-Adams.pdf

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